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Sangbaipi (White Mulberry Root-bark)---桑白皮(powder100g/bottle)

Price:
$18.72
Weight:
0.30 LBS
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Calculated at checkout


Product Description

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 It is the dried root bark of Morus alba L.,family oraceae. The roots are dug and collected between late autumn when the leaves begin to fall and next spring before they sprout. They are cut open vertically after the yellow-brown coarse barks are scraped away, and the barks are peeled off and collected to be dried in the sun. They are cut into tiny slices to be used in raw form or after stir-baked with honey.

[ Medicinal Properties]: Sweet and cold; relate to lung meridian.

[ Medicinal Efficacies ]: Purge lung to relieve dyspnea; induce diuresis to alleviate edema.

[ Clinical Applications ]: 1. Lung heat causing cough and dyspnea     It is combined with Digupi and Gancao, such as Xiebai Powder.

2. Excess syndrome of fluid retention manifested as edema, difficult urination       It is usually combinted with Dafupi, FUlingpi and Shengjiangpi in Wupi Powder.

In addition, it can also clear liver and stop bleeding, so it is effective for exuberance of liver yang and liver fire manifested as hypertension, epistaxis and hemoptysis.

[ Usage and Dosage ]: 6-12g. The raw are used to purge lung, induce diuresis, clear fire and pacify liver. The stir-baked with honey are used to treat lung deficiency causing cough.

桑白皮为桑科植物桑Morus alba L.的根皮。全国大部分地区均产,主产于安徽、河南、浙江、江苏、湖南等地。秋末叶落时至次春发芽前挖根,刮去黄棕色粗皮,剥取根皮,晒干,切丝生用,或蜜炙用。

       【药性】甘,寒。归肺经。        【功效】泻肺平喘,利水消肿。       
 
【应用】        1.肺热咳喘。本品性甘寒性降,主入肺经,能清泻肺火兼泻肺中水气而平喘。治肺热咳喘,常配地骨皮同用,如泻白散(《小儿药证直诀》);若水饮停肺,胀满喘急,可配麻黄、杏仁、葶苈子等宣肺逐饮之药同用;治肺虚有热而咳喘气短、潮热、盗汗者,也可与人参、五味子、熟地等补益药配伍,如补肺汤(《永类钤方》)。       
 
2.水肿。本品能泻降肺气,通调水道而利水消肿,尤宜用于风水、皮水等阳水实证。全身水肿,面目肌肤浮肿,胀满喘急,小便不利者,常配茯苓皮、大腹皮、陈皮等,如五皮散(《中藏经》)。       
此外,本品还有清肝降压止血之功,可治衄血、咯血及肝阳肝火偏旺之高血压症。       
 
【用法用量】煎服,5~15g。泻肺利水,平肝清火宜生用;肺虚咳嗽宜蜜炙用。       
 
【古籍摘要】        1.《名医别录》:“去肺中水气,唾血,热渴,水肿腹胪胀,利水道。”       
 
2.《药性论》:“治肺气喘满,水气浮肿,主伤绝,利水道,消水气,虚劳客热,头痛,内补不足。”       
 
3.《本草纲目》:“桑白皮,长于利小水,及实则泻其子也。故肺中有水气及肺火有余者宜之。”       
 
【现代研究】        1.化学成分:本品含多种黄酮类衍生物,如桑根皮素、桑皮色烯素,桑根皮素等;伞形花内酯,东莨菪素,还含有作用类似乙酰胆碱的降压成分;近又提得桑皮呋哺A。       
 
2.药理作用:本品有轻度止咳作用,并能利尿,尿量及钠、钾、氯化物排出量均增加;煎剂及其乙醇、乙醚、甲醇的提取物,有不同程度的降压作用;对神经系统有镇静、安定、抗惊厥、镇痛、降温作用;对肠和子宫有兴奋作用。煎剂对金黄色葡萄球菌、伤寒杆菌、痢疾杆菌及抑制作用。本品对子宫颈癌JTC28、肺癌细胞有抑制作用,近年研究还表明,还能抗爱滋病毒。       
 
3.临床研究:因本品有肯定的降血压作用,有人用五皮饮加重桑白皮用量,治疗高血压危象(安徽中医学院学报,1995,3:22);单用桑根白皮一味煎服,治小儿流涎21例,均治愈,随访1年未见复发(云南中医杂志,1987,1:37);单用外敷治疗臁疮亦有效(四川中医,1991,4:49)       

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